6 Input 400W Mixer Amplifier with Remote Level Control | AtlasIED
400-Watt Networkable 4-Channel Power Amplifier | AtlasIED
BOSS Audio Systems OX4.400 4 Onyx Series Car Amplifier – 1600 High Output, 4 Channel, Class A/B, Low/High Level Inputs, Low Pass Crossover, Bass, Full Range, Bridgeable, For Subwoofer
MUD Series 400-Watt 4-Channel Full Range Class D All Weather Powersports Amplifier | MTX - Serious About Sound®
NA2-400.1 Nautic 400 Watt Amplifier | MB Quart
Crown Com-Tech 400 Two-Channel Power Amplifier • Available from ChurchGear
PSB-400DSP Subwoofer Amplifier with DSP - 400W – Soundavo